Firearm



June 27, 1950 J. E. BROC K FIREARM Filed June 27, 1947 V Fig. 10.

2 Sheets-Sheet 1 70 Fig.2. 64

I l I ul- Invenlor James E verding Brock June 27, 1950 BROCK 2,512,998

FIREARM Filed June 27, 1947 Z Sheets-Sheet 2 Inventor James E verding Brock Patented June 27 1950 3 Claims.

This invention relates generally to firearms, and more. particularly to a. small pistol comprising a barrel, a breech block removably secured to one end of this barrel and carrying firing mechanism thereon,.a cocking spring operatively associated with the firing mechanism and a casing enclosing the barrel and cooking spring and having trigger mechanism mounted thereon.

Aprimary object of this invention is to provide a firearm of exceptionally small bulk and weight, which may be safely used with cartridge ammunition in the order of .22 calibre.

Another object of this invention is to provide a firearm of this character in which a relatively strong cocking spring and simple firing mechanism assure the reliable operation of the weapon.

Another object of this invention is to provide a pistol of this character in which the .breeching thereof. is comparatively simple and verylimited structure is required to provide for-the breeching.

and-reloading of the pistol.

Still anotherobiect. of this invention is to providea-pistol in which the trigger mechanism is provided with a safety catch of novel character an'didesigned to allow the, pistol to .be safely carried inthepocket, handbag, glove compartment of anautomobile, or the like.

Still another object of this invention is to provide firing and trigger mechanism which may be operated without the .use of lubricating oil..

And a last object to be specifically mentioned is torprovide a device of this. character which is relatively inexpensive and practicable to manufaCturaextremely simple andconvenientto use and-to disassemble forcleaning or repair, and which .will give generally efficientand durable service.

With these. objects definitely in view this inventionresidesin certain. novel. features of con- Figure '7 is a perspective view of the trigger lock;

Figure 8 is another perspective view of this trigger lock;

Figure 9 is an end view of the pistol, the view being taken from the breech end;

Figure 10 is a grouped view of the safety catch, the safety catch locking lever and the safety catch locking lever spring;

Figurell is a perspective view'of a trigger guide insert; and p Figure 12 is a perspectiveview of the trigger. Similar characters of reference designate similar or identical parts and portions throughoutthe specification and throughout the several views of the drawings.

Referring now to the drawings in detail, it will be noted that this pistol includes a barrel Ill which is substantially co-extensive in length with g barrel will preferably be rifled, as indicated at' I6, throughout'the major portion of the length thereof.

The wing "flange porti'ons l4 of'the'barrel are adapted to be removably inserted between the' inner face I8 and" the' se'gmental fianges In of the 'breech' block, which 'for convenience is general'lyi'ndi'cated' b'ythe numeral 22'. This'breech blo'ckds gen'erally'cylindrical inform, the exterior surface being stepped, as indicate'dat 2 to facilitate the "securement thereof within the end of the-cylindrical casing 26-. The outer end face" ofthe'bre'ech block is channeled; as indicated at 28-, toreceivethe'rocker Bilwhich issecured in" place "by pin 32, the terminal" portions of which are-preferably disposed within recesses '34- cut in the rou-nd'e'dor bevel-ledwuter end face of the breech block.

The environment wherewith this in-vention' i's to be used. will-,of-course, include a'cartrid'ge36" which will bepercussion fired from the head portion-thereot 38 ,-which head portion seats between" theeend 'ofthe barrel and the recessed" portion lll i in -the-wface- IB of'the' breechblock, as best illustrated inl-Figuresz and 3.

The firing pin 42 is generally cylindrical with a key portion 44, and the breech block is formed with a cylindrical bore with a terminal slot to receive this firing pin and key, as well illustrated in Figure 2. A rocker actuating pin 46 is slidably mounted within a bore formed in the breech block, the bore having an enlarged portion at the outer end thereof to receive the head 48 of the rocker actuating pin. The bore of the rocker actuating pin will preferably be formed in a portion of the breech block having one of the segmental fiange portions in order that maximum suport may be given to the inner end of this rocker actuating pin, and the outer end face of the head 48 will, of course, be substantially flush with the surface at the root of the channel 28 inthe breech block. It will be understood that the head 48 and the key 44 are provided to prevent the rocker actuating pin and the firing pin from sliding out of the breech block when the same is removed from the casing 26, as when the pistol is breeched for reloading, adjustment or repair.

The muzzle end of the barrel is, as already described, exteriorly threaded as at 12 and the cooking spring retainer nut 50 is screwed on to the end of the barrel, to retain the helical cocking spring 52 compressed between this nut 58 and the trigger sleeve 54 which is of an internal diameter very slightly greater than the external diameter of the barrel l0 and which has an external diameter very slightly less than the internal diameter of the casing 26. This trigger sleeve 54 is adapted to slide freely between the barrel and the casing and is provided with a groove 56 adjacent the muzzle end thereof, the side of the groove adjacent the breech end of the pistol being bevelled to provide for clearance of the catch portion 58 of the trigger, which is generally indicated by the numeral 60. It should be noted here that the cooking spring retaining nut 58 is not removed'during the reloading of this pistol, and this nut is retained in position on the end of the barrel III by means of a set screw 82.

The trigger lock will now be described in sufficient detail to clearly show the features thereof. This trigger lock, generally indicated by the numeral 64 and illustrated in Figures '7 and 8, is an elongated rectangular member with upstanding rib portions 66 and 68 on the top surface thereof with. a recess 18 therebetween and extending into a further recessed portion 12 on the opposite side of the trigger lock, which latter recess receives the trigger guide insert 14 represented in Figure 11 and having a retaining flange 16 to coact with a similar flange 16' of solder or the like applied after assembly to retain this insert I4 in sliding relationship within the parallel trigger lock guides 18 which are formed integral with the casing 26. Another recess 88 is provided on the upper side of the trigger lock to receive the safety catch 82, with a communicating recess 84 extending through the lock. and another portion 86 of the recess is provided to receive one end of the safety catch spring 88. A transverse open channel 98 is provided on the underside of the trigger lock at one end thereof, to receive the hinge pins 92 of the safety catch locking lever 94.

In the preceding paragraph reference has been made to the various elements which are operatively associated with the trigger lock 64, and these parts will now be describedin some greater' detail. The trigger 50 has a portion 96, disposed at right angles with the catch portion 58 and adapted to be held by the muzzle end portion of the trigger lock when the pistol is in cocked position, that is, when the trigger is in the position illustrated in Figure 2 with the catch portion 58 inserted in the groove 56 of the trigger sleeve 54 and when the axis pins 98 are resting on the upper surface of the casing 26. The form of the safety catch 82 will be clearly understood if reference be had to Figure 2 and to Figure 10, this unit comprising a plate portion which is slidably mounted within the recess of the trigger lock, an upstanding lipped flange or hook I08 which engages the end of the safety catch locking lever 94, and an aperture I02 to facilitate the attachment thereto of one end of the safety catch spring 88. The safety catch locking lever 94 is pivotally secured to the trigger lock by means of the axis pins 92 and a small apertured flange I04 is provided on the underside of the lever for the securement thereto of the other end of the safety catch spring 88. The forward end of this lever is provided with finger grips I06, and the drawings illustrate an integral built up portion I08 on the forward end of this lever at the point where the hook portion I08 of the safety,

catch contacts the same, although this built up portion may be deleted, if desired. Finally, the trigger guide insert is a flat U-shaped member which is slid into the recess 12- in the trigger lock and functions to facilitate the insertion of the trigger 60 into proper operative position, and this with the recited objects sought to be achieved by.

this invention, but it may be added, in recapitulation, that the extraction of an empty shell and the reloading of the pistol is accomplished by breeching the pistol, as in Figure 6, wherein it is clearly illustrated how the wing flanges l4 may be turned to disengage the barrel ID from the segmental flanges 20 of the breech block 22. It will be understood that in reloading the pistol the trigger sleeve 54 must be moved so as to be agai'n'locked in the position shown in Figure 2, by means of the catch 58 of the trigger, this requiring movement of the barrel ID, as to the right in this figure, and

reinsertion of the trigger, trigger lock, and trigger guide insert in proper positional relationship.

Ordinarily the safety catch mechanism will be replaced in proper position at the same time. To fire the pistol the safety catch 82 is pressed forwardly to release the safety catch locking lever .94 and allow the safety catch to be pulled toward the breech end of the pistol by the safety catch spring 88. This releasing of the safety catch will allow the movement of the trigger lock 64 toward the breech end of the pistol upon pressure of a finger on the end of the trigger lockadjacent the muzzle end of the pistol. When the trigger lock has been thus moved sufliciently to allow the portion 96 of the trigger to rise into the recess 18 of the trigger lock, the catch portion 58 of the trigger will release the trigger sleeve 54. ately upon such release the cooking spring 52 drives the trigger sleeve 54 forcefully toward the breech end of the pistol and strikes the rocker actuating pin 46. The rocker 30, in turn, drives the firing pin 42 against the head of the percussion fired type cartridge 36 and the projectile of this cartridge is ejected through the rifled bore of the barrel, leaving the empty cartridge case in the pistol which must, of course, be removed before the pistol can be reloaded.

Immedi- Obviously many minor variations may be made in this invention without departure from the spirit and scope thereof and though there has been shown a particular embodiment of this invention, this application is not limited to this particular embodiment, but it is desired to include in the scope of this invention the construction, combination and arrangement of parts and portions substantially as set forth in the appended claims.

What is claimed as new and desired to be secured by Letters Patent is:

1. A pistol comprising 'a barrel, a breech block removably secured to one end of the barrel, cartridge firing mechanism mounted on said breech block, a cooking spring operatively associated with said firing mechanism, a casing enclosing said cocking spring and barrel, and trigger mechanism mounted on said casing, said cartridge firing mechanism including a firing pin slidably mounted in said breech block, a rocker associated with said firing pin and means to transmit impact force of said cocking spring to said rocker.

2. A pistol comprising a barrel, a breech block removably secured to one end of the barrel, cartridge firing mechanism mounted on said breech block, a cocking spring operatively associated with said firing mechanism, a casing enclosing said cocking spring and barrel, and trigger mechanism mounted on said casing, said cocking spring being helical and surrounding said barrel, and a trigger sleeve slidably associated with said barrel and arranged to compress the cocking spring when in one position and to actuate said firing mechanism when released by said trigger mechanism,

3. A pistol comprising a barrel, 2. breech block removably secured to one end of the barrel, cartridge firing mechanism mounted on said breech block, a cooking spring operatively associated with said firing mechanism, a casing enclosing said cocking spring and barrel, and trigger mechanism mounted on said casing, said cocking spring being helical and surrounding said barrel, and a trigger sleeve slidably associated with said barrel and arranged to compress the cocking spring when in one position and to actuate said firing mechanism when released by said trigger mechanism, said trigger mechanism including a trigger pivoted on the casing for engaging said trigger sleeve in said one position, an elongated trigger lock, elongated trigger lock guides whereby the trigger lock is longitudinally slidably mounted on the casing, a safety catch locking lever carried by said trigger lock and engageable in one position with said trigger lock guides, and a safety catch for releasably holding the lever in said position with the safety catch preventing longitudinal movement of the trigger lock and the trigger lock retaining the trigger in position to hold the trigger sleeve against movement.

JAMES EVERDING BROOK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,001,405 Abbott May 14, 1935 2,042,934 Gill June 2, 1936 FOREIGN PATENTS Number Country Date 6,491 Great Britain Nov. 5, 1914 27,923 Switzerland s Apr, 9, 1903 

